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· What is the role of theory in research proposals?
· What are the elements of a study plan? Where might a beginning researcher lose logical flow among elements in a study plan? Why might that happen?
· What are the pros and cons of selecting an established theoretical or conceptual model or framework? What are the pros and cons of creating/developing your own?
· What are some ethical issues particularly relevant to research in your discipline? What are some ways to address them?
· What are ethical concerns that are important at the beginning stage of the study? What about in the implementation and reporting stages?
Find the probability that a standard normal random variable will assume a value between: Find a z such that 70% of the area is above that value.
A local hardware store claims that the mean waiting time in line is less than 3.5 minutes. A random sample of 20 customers has a mean of 3.7 minutes with a standard deviation of 0.8 minute. If α = 0.05, test the store's claim.
Develop a 99% confidence interval for the population mean household income, assuming a normal distribution.
Assume the population standard deviation is 1.2 hours. The standard error of the mean is:
Determine which groups differ in average shelf life. Give test statistic, hypothesis, decision rule and hypothesis
An independent-measures research study was used to compare two treatment conditions with n = 4 participants in each treatment. The first treatment had a mean of M = 58 with a variance of s^2 = 28, and the second treatment had M = 52 with s^2 = 36.
Use the Poisson Distribution the indicated probabilities in one year, there were 116 homicide deaths in Richmond VA. For a randomly selected day
A sample of 23 European countries found that variance of life expectancy was 7.3 years. Determine the 95% confidence interval estimate for variance of life expectancy in Europe?
The superintendent of a printing plant has selected a random sample of 100 rolls of paper from a large shipment. The average length of the sample rolls is 416 feet, with a variance of 2704 feet.
A dataset has 1000 records and 50 variables with 5% of the values missing, spread randomly throughout the records and variables. An analysis decides to remove records that have missing values. About how many records would you expect would be remov..
When using the distribution of sample means to estimate the population mean, what is the benefit of using larger sample sizes?
What is the technical definition of alpha? When might a "high level of proof" be required in business? Why does a "high level of proof" mean a small value of alpha?
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